Written by the Fiveable Content Team • Last updated August 2025
Verified for the 2027 exam
Verified for the 2027 exam•Written by the Fiveable Content Team • Last updated August 2025
Definition
The logarithmic identity log_b(x) = log_c(x) / log_c(b) that allows conversion of logarithms from one base to another, enabling use of calculators and simplification of expressions.
AP course connection
Topic 2.13: 2.13 Exponential and Logarithmic Equations and Inequalities